mirror of
https://github.com/RIOT-OS/RIOT.git
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9214990aee
- moved to new port structure - rewrote startup code - added implementation dummies for UART and timer - switched to atmel linkerscript - cleaned up Makefiles
216 lines
8.1 KiB
C
216 lines
8.1 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License v2.1. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @ingroup cpu_lpc1768
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* @{
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*
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* @file
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* @brief Startup code and interrupt vector definition
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*
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* @}
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*/
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#include <stdio.h>
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#include <stdint.h>
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/**
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* memory markers as defined in the linker script
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*/
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extern uint32_t _sfixed;
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extern uint32_t _efixed;
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extern uint32_t _etext;
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extern uint32_t _srelocate;
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extern uint32_t _erelocate;
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extern uint32_t _szero;
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extern uint32_t _ezero;
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extern uint32_t _sstack;
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extern uint32_t _estack;
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/**
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* @brief functions for initializing the board, std-lib and kernel
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*/
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extern void board_init(void);
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extern void kernel_init(void);
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extern void __libc_init_array(void);
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/**
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* @brief This function is the entry point after a system reset
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*
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* After a system reset, the following steps are necessary and carried out:
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* 1. load data section from flash to ram
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* 2. overwrite uninitialized data section (BSS) with zeros
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* 3. initialize the newlib
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* 4. initialize the board (sync clock, setup std-IO)
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* 5. initialize and start RIOTs kernel
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*/
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void reset_handler(void)
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{
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uint32_t *dst;
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uint32_t *src = &_etext;
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/* load data section from flash to ram */
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for (dst = &_srelocate; dst < &_erelocate; ) {
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*(dst++) = *(src++);
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}
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/* default bss section to zero */
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for (dst = &_szero; dst < &_ezero; ) {
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*(dst++) = 0;
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}
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/* initialize the board and startup the kernel */
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board_init();
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/* initialize std-c library (this should be done after board_init) */
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__libc_init_array();
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/* startup the kernel */
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kernel_init();
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}
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/**
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* @brief Default handler is called in case no interrupt handler was defined
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*/
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void dummy_handler(void)
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{
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while (1) {asm ("nop");}
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}
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void isr_nmi(void)
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{
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while (1) {asm ("nop");}
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}
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void isr_mem_manage(void)
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{
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while (1) {asm ("nop");}
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}
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void isr_debug_mon(void)
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{
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while (1) {asm ("nop");}
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}
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void isr_hard_fault(void)
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{
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puts("##### HARD FAULT #####");
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while (1) {asm ("nop");}
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}
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void isr_bus_fault(void)
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{
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puts("##### BUS FAULT #####");
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while (1) {asm ("nop");}
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}
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void isr_usage_fault(void)
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{
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puts("##### USAGE FAULT #####");
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while (1) {asm ("nop");}
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}
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/* Cortex-M specific interrupt vectors */
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void isr_svc(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_pendsv(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_systick(void) __attribute__ ((weak, alias("dummy_handler")));
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/* LPC1768 specific interrupt vector */
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void isr_wdt(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer2(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer3(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_uart0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_uart1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_uart2(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_uart3(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_pwm1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_i2c0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_i2c1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_i2c2(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_spi(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_ssp0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_ssp1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_pll0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_rtc(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_eint0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_eint1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_eint2(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_eint3(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_adc(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_bod(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_usb(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_can(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_dma(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_i2s(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_enet(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_rit(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_mcpwm(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_qei(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_pll1(void) __attribute__ ((weak, alias("dummy_handler")));
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/* interrupt vector table */
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__attribute__ ((section(".vectors")))
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const void *interrupt_vector[] = {
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/* Stack pointer */
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(void*) (&_estack), /* pointer to the top of the empty stack */
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/* Cortex-M handlers */
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(void*) reset_handler, /* entry point of the program */
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(void*) isr_nmi, /* non maskable interrupt handler */
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(void*) isr_hard_fault, /* if you end up here its not good */
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(void*) isr_mem_manage, /* called on memory fault */
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(void*) isr_bus_fault, /* called on bus fault */
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(void*) isr_usage_fault, /* callee on usage fault */
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(void*) (0UL), /* reserved */
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(void*) (0UL), /* reserved */
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(void*) (0UL), /* reserved */
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(void*) (0UL), /* reserved */
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(void*) isr_svc, /* system call interrupt */
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(void*) isr_debug_mon, /* debug monitor interrupt */
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(void*) (0UL), /* reserved */
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(void*) isr_pendsv, /* pendSV interrupt, used for task switching in RIOT */
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(void*) isr_systick, /* SysTick interrupt, not used in RIOT */
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/* LPC specific peripheral handlers */
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(void*) isr_wdt, /* watchdog timer */
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(void*) isr_timer0, /* timer0 */
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(void*) isr_timer1, /* timer1 */
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(void*) isr_timer2, /* timer2 */
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(void*) isr_timer3, /* timer3 */
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(void*) isr_uart0, /* uart0 */
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(void*) isr_uart1, /* uart1 */
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(void*) isr_uart2, /* uart2 */
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(void*) isr_uart3, /* uart3 */
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(void*) isr_pwm1, /* pwm1 */
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(void*) isr_i2c0, /* i2c0 */
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(void*) isr_i2c1, /* i2c1 */
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(void*) isr_i2c2, /* i2c2 */
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(void*) isr_spi, /* spi */
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(void*) isr_ssp0, /* ssp0 */
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(void*) isr_ssp1, /* ssp1 */
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(void*) isr_pll0, /* pll0 (main pll) */
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(void*) isr_rtc, /* real time clock */
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(void*) isr_eint0, /* external interrupt 0 */
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(void*) isr_eint1, /* external interrupt 1 */
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(void*) isr_eint2, /* external interrupt 2 */
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(void*) isr_eint3, /* external interrupt 3 */
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(void*) isr_adc, /* a/d converter */
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(void*) isr_bod, /* brown out detect */
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(void*) isr_usb, /* usb */
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(void*) isr_can, /* can */
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(void*) isr_dma, /* gp dma */
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(void*) isr_i2s, /* i2s */
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(void*) isr_enet, /* ethernet */
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(void*) isr_rit, /* repetitive interrupt timer */
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(void*) isr_mcpwm, /* motor control pwm */
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(void*) isr_qei, /* quadrature encoder interface */
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(void*) isr_pll1, /* pll1 (usb pll) */
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};
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